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  • Küçük Resim
    Öğe
    Dar yapraklı Dişbudak'ta (Fraxinus Angustifolia Vahl.) bazı tohum ve fidecik özellikleri
    (2005) Çiçek, Nurten; Çiçek, Emrah; Bilir, Nebi
    Bu araştırmada, dar yapraklı dişbudak (Fraxinus angustifolia Vahl.) orijinlerinde, tohum ve fidecik özelliklerinden, tohum bin tane ağırlığı, çimlenme süresi, çimlenme yüzdesi; epikotil boyu, hipokotil boyu, kotiledon boyu ve kotiledon eni çalışılmıştır. Çalışma sonucunda dar yapraklı dişbudakta ortalama, bin tane ağırlığı 85,8 gr, çimlenme süresi 25 gün, çimlenme yüzdesi 48,2; kotiledon boyu 31 mm, kotiledon eni 10 mm, epikotil boyu 27 mm ve hipokotil boyu 16 mm olarak bulunmuştur. Uygulanan varyans analizi sonucunda, orijinler arasında çimlenme yüzdesi, kotiledon eni, hipokotil boyu ve epikotil boyu bakımdan anlamlı fark olduğu belirlenmiştir. Çalışma sonuçları, türün fidanlık tekniği ve ıslah çalışmaları bakımından önemlidir.
  • Küçük Resim
    Öğe
    Effects of seedbed density on one-year-old Fraxinus angustifolia seedling characteristics and outplanting performance
    (Springer, 2007) Çiçek, Emrah; Çiçek, Nurten; Bilir, Nebi
    To assess the effects of seedling spacing on one-year-old seedling morphology in the nursery, seeds of three provenances of Fraxinus angustifolia were sown at five different seedling spacings within rows of two different spacings in the seedbed. Subsequent growth performance of one-year-old seedlings was assessed by planting in the forest. Within row spacings were: 4.3, 5.0, 6.3, 8.3, and 12.5 cm, and there were five rows at 20 cm apart, or three rows at 33 cm apart across the 1.2 m wide seedbeds. Both spacings within and between rows significantly affected shoot height, root collar diameter, root dry weight and shoot dry weight, but not root/shoot ratio. Wider spacings produced larger seedlings, but only the wider spacing within rows significantly increased fine and coarse root mass. Provenances showed significant differences in diameter, root/shoot ratio, and fine and coarse roots, and they also showed interactions with row spacings in height and diameter measurements. One year after outplanting, diameter growth was significantly related to provenance, and diameter growth was 88% greater for trees from 33 cm nursery row spacing than those from 20 cm nursery row spacing.